How rich media works

Collect site specs

The media agency is responsible for collecting site specs. It's best to start this process when the media agency begins the request for proposal (RFP) for the site or purchases the media.

Different publishers often have different specifications for rich media creatives. So to make sure your ad can run across all sites, create a lowest common denominator (LCD) chart (see below) and deliver it to your creative agency before the ad is built. If you build to the LCD, we’ll be able to build one ad that conforms to the limits of multiple sites.

If you haven't finalized creative specs yet but want to provide guidelines to the creative team, show them the rich media QA guidelines.

Spec collection is a three-step process:

Step 1: Finalize the media plan

The media plan document must include:

A list of the sites targeted for your campaign, with start and end dates, impression levels, and placement names if available

Step 2: Collect site specs from each site

Step 3: Generate an LCD

After site specs are gathered, generate an LCD. The LCD is based on the smallest file size, expansion size, expansion direction, etc. for each size and type of banner chosen to accommodate all publishers on the media plan. Please fill out the first tab of this spec sheet.

To find an LCD, look at all the ad specs for the publisher sites you want to serve on. Then take the smallest file size, expansion size, expansion direction, etc. for each size and type of creative.